Reatomizer



. Jan. 15 1924; 1,480,959

J. A. sEcoR REATOMI'ZER Filed June 50, 1919 IN VEN TOR:

John A. 6660/ A fforneya Patented Jan. 15, 1924.

UNITED STATES 1,480,959 PATIENT OFFICE.

JOHN A. SECOR, OF LAPORTE, INDIANA, ASSIGNOR TO ADVANCE-RUMELY COMPANY, OF LAPORTE, INDIANA, A CORPORATION OF INDIANA.

REATOMIZER.

Application filed June 30, 1919. Serial No. 307,682.

To all whom it may concern:

Be it known that 1, JOHN A. Snoon, a citizen of the United States, residing at Laporte,'in the county of Laporte and State of Indiana, have invented a certain new and useful Improvement in Reatomizers, of which the following is a specification.

My invention relates to improvements in carburetors, and particularly has reference to re-atomizing devices therefor.

It is, of course, well-known that when liquid fuel is aspirated by a rapidly moving current of air, the sudden change in velocity of the liquid and the sudden change in the pressure to which it is subjected among other forces, results in more or less comminuting or atomizing the liquid so that it readil mixes with the air to form a combustible fluid.

Experience shows, however. that particularly with heavier fuels, such as kerosene and the heavier fractions or distillates, you are likely to have difiiculty in that the fuel which is caught up by the air may be redeposited along the walls and passages through which it travels and particularly is this the case after the combustible mix ture has passed by a throttle valve. the throttle valve tending to change the direc-- tionof flow, and to separate out the fuel so that you may even get an actual stream of liquid'running down the walls of the passage, which stream of liquid has been taken out of a satisfactory mixture by the mere presence of the partially closed throttle valve.

This difiiculty is also present when you are using water as a part of the combustible mixture, and it is, of course, quite undesirable that this liquid fuel or liquid water be allowed to get into the cylinder in anything but a gaseous or finely divided condition, both because either the liquid fuel or liquid water hinders combustion and because liquid ingredients in the cylinder R likely to cause dilution of the lubricant in the crank case.

My invention therefore takes the form of a device or devices which have for their purposes, to reatomize the combustible liquid, or water and mix or assist in the mixin of it with the air.

lily invention is more or less diagrammatically shown in the accompanying drawings which show a longitudinal section through a carburetor embodying my device, where- 1n- Figure l is across section through the carburetor with a first atomizing device;

Figure 2 is a detail cross section of the passage pipe with a modified form of atomizing device; a

Figure 3 is a detail of an extension ofthe passageway and showing a re-atomizer at the intake valve.

Like parts. are designated by like characters throughout.

A is' a part. of the engine cylinder, or

housing containing the cylinder. A is the carburetor casting which merely consists in an elongated tube flanged at A so that the bolts A may attach it to the engine and provided with a water reservoir A*, fuel reservoir A and water nozzle A and fuel nozzle A distharging into the passage. A is a butterfly throttle valve between the fuel and water nozzles and the engine, adapted to be izpntrolled by means of the lever A and link B is an atomizing or re-atoniizing sleeve inserted inthe passage immediately below the butterfly. This sleeve takes the form of a modified Venturi tube from the throat of which a ridge projects, a slight gutter being left between the ridge and the wall of the tube so as to provide a sharp annular knife edge B with a downwardly and outwardly extending curved channel or reservoir or gutter B the wall of the Venturi tube being sloped upwardly from the bottom of the reservoir as at B The reatomizing Venturi is held in position by clamping the flange C therein between the carburetor flange and the engine. To obviate possibility of breaking the carburetor flange, washers C of the same thickness as the reatomizing flange C are used to contact the pressure of the bolts and thus to prevent breaking or distortion of the carburetor flange.

D is the engine intake valve carried on the valve stem D controlled by means not here shown. It operates against a valve seat D and this seat is made removable in the engine and carries, extending up toward the carburetor, the Venturi tube D grooved or distorted at D in the same manner as the knife edge.

overflowing the ledge all the way around,

distortion of the member B. This arrangement gives a final atomization and mixing just as the mixture enters the engine.

Thus I have disposed two Venturi tube atomizers between the throttle valve and the intake.

Referring to the device of Figure 2, the passageway A is provided with an interior trough F which is arranged about the side of the passageway and is provided with the edge G. Under certain conditions such a device might be operated more or less effec tively to atomize the liquid by collecting it as it flows down the side and then exposing it to the outer knife like edge of the trough which lies in the path of the moving current of air or mixture. This is only done to suggest the different forms of atomizer which might be employed.

The use and operation of my invention are as follows:

If the throttle valve is wide open and if the air velocities are high, there will be little change in the mixture, but as it passes through the Venturi tube, it will be re-atomized and re-mixed to some certain extent.

If, however, the throttle is more or less closed it will provide an obstruction against which the fuel will impinge and, being heavier than the air, it will be separated out by inertia and the air will go on carrying probably a lean and unsatisfactory mixture and the liquid will run down the walls of the tube. This liquid will be caught by the ledgein the venturi and the little annular reservoir formed by that ledge will be filled up with liquid, and as more liquid comes down, it will overflow the sharp One possible explanation of the action of my device is that as the liquid overflows, it comes into the direct path of the air and it will be suddenly torn apart and atomized by such air.

Experience shows that the diameter of this modified Venturi tube for the lower reatomizer must be a little larger to get the same capacity, than the diameter of a normal venturi. This is probably caused by the fact that the effective diameter of the venturi is decreased by the thin film of oil before this thin film of oil has time to be broken up and carried away as part of the atomizing mixture.

I claim 1 1. In combination with a down-draft carbureter, a reatomizer located in the mixture passage leading from the carbureter to the engine, said reatomizer comprising an annular channel opening only into said passage and facing in the direction of the incoming fuel current, and provided about its inner sides with a sharp edge, said channel adapted to receive and collect liquid fuel and to permit the same to overflow its inner edge and to be reatomized thereby into the current.

2. An atomizer and mixer comprising a Vcnturi tube locatedin the mixture passage leading from the carburcter to the engine and having an annular channel in the in terior wall thereof, Said channel beingopen Venturi tube adapted to be inserted in the.

mixture passage of an internal combustion engine, having an annular channel in the interior wall thereof,said channel being closed at its bottom and being situated at the smallest diameter of the venturi, and opening towards the incoming mixture.

4. An atomizer and mixer comprising a Venturi tube adapted to be inserted in the mixture passage of an internal combustion engine, having an annular channel in the interior wall thereof, said channel being closed at its bottom and being situated at the smallest diameter of the venturi, and opening towards the incoming mixture, the channel being bounded on its exposed side by a sharp edge.

5. An atomizer and mixer comprising a Venturi tube formed within the mixture passage of an internal combustion engine, having an annular channel in the interior wall thereof, said channel being closed at its bottom and being situated at the smallest diameter of the venturi, and opening towards the incoming mixture.

In testimony whereof, I aflix my signature in the gresence of two witnesses this 24th day of une, 1919.

JOHN A. SECOR.

Witnesses:

MINNIE M. LINDENAN, MILDRED H. MACKE- 

